ACC Business has promoted Sandy Butler Buchanon to national sales director, where she will integrate sales proposals, direct sales strategies and initiate new offerings, the company said.   Butler Buchanon has been with ACC Business for seven years as a regional sales manager and has more than 23 years of experience at AT&T. During her tenure at AT&T, she has worked in various positions including communications technician, West Coast account executive and sales manager in direct sales, human asset and learning manager, and marketing manager.   ACC Business www.accbusiness.com